THE FORM FACTOR OF THE NEUTRAL PION,

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Abstract:

In an experiment performed at Columbia Universitys Nevis Cyclotron, the decay neutral-pion to gamma photon electron positron was observed. Using a system of counters and spark chambers 2200 events were recorded with an opening angle of the Dalitz pair near 120 deg. The effect of pi-zero structure on the invariant mass spectrum of the pair is interpreted as an electromagnetic form factor for the neutral-pion. The form factor is a linear function, gammax 1 ax, of the invariant mass squared, x. The experimental result for the form factor slope is a 0.01 plus or minus 0.11 1pion masssq..

Author(s):
Nemethy, Peter
Author Organization(s):
COLUMBIA UNIV IRVINGTON-ON-HUDSON N Y NEVIS LABS
Pagination:
0074

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
R-617, NEVIS-165
Contract/Grant Number(s):
Nonr-266(72)
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*PIONS, *DECAY SCHEMES), MESON REACTIONS, GAMMA EMISSION, PAIR PRODUCTION, INVARIANCE, DISPERSION RELATIONS, INTERNAL CONVERSION
Field(s)/Group(s):
Nuclear Physics and Elementary Particle Physics
Keyword(s):
FORM FACTORS
Report Date:
1968 Jan 01